4000 Essential English Words 4 – Answer Key
Unit 1
5. j
6. e
Exercise 1
7.f
1. rapid / rate
8.c
2. contemporary / vary
9. d
3. humid / toxic
10. b
4. texture / aroma
5. cluster / combined
Reading Comprehension
6. subtle / soothing
Part A
7. cultivated / odor
1. T
8. palate / beverage
2. T
9. condensed / divine
3. F The Aztecs cultivated chocolate
10. paradise / plantations
trees on plantations.
4. T
Exercise 2
5. F
The first chocolate beverages
Part A
were made by the Mayans and
1. i
Aztecs.
2. e
6. T
3. c
4. g
Part B
5. b
1. a
6. a
2. c
7. f
3. d
8. h
4. c
9. d
10. j
Part B
1. g
2.i
3. h
4. a
1
4000 Essential English Words 4 – Answer Key
Unit 2
3. wreck
4. accident
Exercise 1
5. character
Part A
1. a
Reading Comprehension
2. d
Part A
3. d
1. T
4. b
2. T
5. b
3. F
The admiral put branches with
sharp thorns in the monkey’s cages.
Part B
4. F
1. c
conscience.
2. b
5. F
3. a
because the monkeys were thin and
4. b
weak.
5. d
6. T
Exercise 2
Part B
1. admiral
1. b
2. sour
2. b
3. Kerosene
3. c
4. conscience
4. b
5. grapefruits
6. steward
7. fiery
8. string
9. hay
10.hoop
Exercise 3
1. stake
2. flesh
2
The steward had a good
The steward was horrified
4000 Essential English Words 4 – Answer Key
Unit 3
4. i
5. a
Exercise 1
6. c
1. option / idiot
7. d
2. torment / admonished
8. g
3. pinpoint / echoed
9. b
4. brag / perfect
10. f
5. switch / beware
6. eventual / pastime
Reading Comprehension
7. awesome / disagreed
Part A
8. audible /conscious
1. T
9. immense / indirect
2. T
10. hint / thorough
3. T
4. F
When the young man had an
Exercise 2
option of two trails, he always chose
Part A
the more difficult of the two.
1. b
5. T
2. j
6. F
3. f
home, he knew that he had acted like
4. a
an idiot.
When the young man arrived
5. i
6. e
Part B
7. d
1. d
8. g
2. b
9. h
3. a
10. c
4. a
Part B
1. e
2. j
3. h
3
4000 Essential English Words 4 – Answer Key
Unit 4
Reading Comprehension
Part A
Exercise 1
1. T
Part A
2. F
1. a
3. T
2. c
4. T
3. b
5. F
4. a
animals.
5. c
6. T
6. b
7. a
Part B
8. a
1. b
9. d
2. c
10. b
3. d
4. d
Exercise 2
1. perish / oblivious
2. roost / fond
3. rim / pit
4. soars / flight
5. moan / weep
6. typical / immoral
7. except / beak
8. trivial / disapprove
9. utterly / ivy
10. slippery / damp
4
Eagle had a roost near the pit.
Fox was oblivious to the hidden
4000 Essential English Words 4 – Answer Key
Unit 5
5. i
6. b
Exercise 1
7. f
1. operate / cyberspace
8. h
2. recent / global
9. d
3. ignorant / weird
10. a
4. essays / edit
5. semester / index
Reading Comprehension
6. fainted / lecture
Part A
7. typewritten / highlighted
1. T
8. resolution / gymnasium
2. F
9. moral / awhile
downstairs.
10. evaluated / private
3. F
The private study rooms were
The computers in the private
study rooms were operating correctly.
Exercise 2
4. T
Part A
5. F
1. g
seventy percent of the final grade.
2. e
6. T
3. a
4. i
Part B
5. c
1. c
6. b
2. a
7. j
3. b
8. h
4. b
9. f
10. d
Part B
1. e
2. g
3. c
4. j
5
The geography test was worth
4000 Essential English Words 4 – Answer Key
Unit 6
2. c
3. j
Exercise 1
4. b
Part A
5. f
1. b
6. d
2. a
7. h
3. c
8. a
4. b
9. i
5. a
10. g
Part B
Reading Comprehension
1. b
Part A
2. a
1. F
3. a
on folks.
4. d
2. T
5. c
3. F
Jack Frost likes playing tricks
Jack Frost’s role is to decorate
everything with frost and ice.
Exercise 2
4. T
Part A
5. T
1. g
6. F
2. c
food, the butter started to melt.
3. b
4. j
Part B
5. f
1. a
6. i
2. d
7. d
3. b
8. a
4. c
9. e
10. h
Part B
1. e
6
When Jack Frost set fire to the
4000 Essential English Words 4 – Answer Key
Unit 7
8. volunteered
9. habitat
Exercise 1
10. gratitude
Part A
1. b
Reading Comprehension
2. a
Part A
3. c
1. F
4. b
new office building.
5. d
2. T
The architect wanted to build a
3. T
Part B
4. T
1. c
5. F
2. d
their gratitude, so they cheered.
3. b
6. T
4. a
5. c
Part B
1. b
Exercise 2
2. c
1. a
3. a
2. c
4. d
3. b
4. d
5. d
Exercise 3
1. resources
2. rally
3. memorable
4. offense
5. account
6. obliged
7. proclaimed
7
The people could not conceal
4000 Essential English Words 4 – Answer Key
Unit 8
5. b
6. a
Exercise 1
7. d
1. replace / conduct
8. c
2. influenced / laws
9. j
3. gripped / snapped
10. g
4. enclosed / whatsoever
5. impending / constantly
Reading Comprehension
6. cracks / tends
Part A
7. device / mode
1. F
8. halted / access
a device that played music.
9.valid / version
2. T
10. perspired / sly
3. F
Janie thought constantly about
Janie found the player when
she reached into the bag.
Exercise 2
4. T
Part A
5. F
1. f
“on” mode, it didn’t work.
2. a
6. T
3. e
4. b
Part B
5. j
1. a
6. d
2. b
7. g
3. a
8. c
4. b
9. h
10. i
Part B
1. h
2. i
3. e
4. f
8
When Linda put the player to
4000 Essential English Words 4 – Answer Key
Unit 9
3. b
4. a
Exercise 1
5. b
Part A
1. a
Reading Comprehension
2. c
Part A
3. b
1. T
4. a
2. T
5. d
3. F
George was a strong boy with
a large appetite.
Part B
4. T
1. b
5. F
2. a
didn’t like any subjects.
3. d
6. T
4. a
5. d
Part B
1. a
Exercise 2
2. b
1. alongside
3. c
2. assist
4. d
3. rumor
4. wages
5. smashed
6. feeble
7. efficient
8. subject
9. outraged
10. forgave
Exercise 3
1. b
2. c
9
George was a lazy student who
4000 Essential English Words 4 – Answer Key
Unit 10
Reading Comprehension
Part A
Exercise1
1. T
Part A
2. F
1. a
famous.
2. d
3. T
3. c
4. T
4. b
5. F
5. c
bacteria.
Anton had a longing to become
Anton drew diagrams of the
6. F The scientists took a ferry to
Part B
Holland.
1. a
2. b
Part B
3. c
1. d
4. a
2. b
5. d
3. d
4. a
Exercise 2
1. particle / animate
2. numerous / handy
3. classify / upright
4. longing, plea
5. worthwhile, sophisticated
6. concept, review
7. isolate, diagram
8. constructed, decades
9. ferry, concede
10. refrain, surrender
10
4000 Essential English Words 4 – Answer Key
Unit 11
10. g
Exercise 1
Part B
1. c
1. e
2. b
2. h
3. d
3. a
4. a
4. j
5. b
5. b
6. d
Exercise 2
7. i
1. sort
8. c
2. enchanted
9. f
3. applause
10. g
4. vain
5. diverse
Reading Comprehension
6. genre
Part A
7. ceremony
1. F
8. defense
messages written in code to and from
9. obstacles
Resistance members.
10. exception
2. T
Baker’s first job was to carry
3. T
Exercise 3
4. F
Part A
Paris.
1. e
5. T
2. h
6. T
3. i
4. a
Part B
5. f
1. a
6. d
2. c
7. b
3. b
8. c
4. a
9. j
11
In 1940, armed soldiers entered
4000 Essential English Words 4 – Answer Key
Unit 12
Reading Comprehension
Part A
Exercise 1
1. T
1. muscles / violence
2. F
2. bid / belly
the jacket off of the man.
3. timid / disrespect
3. T
4. enthusiasm / continent
4. F
5. meantime / lean
North Wind.
6. avenue / alternative
5. F
7. rescue / conflict
did teach the North Wind a lesson.
8. terrain / harsh
6. T
9. mischief / succession
10. blow / current
Part B
1. a
Exercise 2
2. d
1. continent
3. c
2. terrain
4. d
3. succession
4. avenue
5. lean
6. alternative
7. current
8. meantime
9. harsh
10. violence
Exercise 3
1. a
2. a
3. c
4. a
5. c
12
The North Wind did not blow
The man was the target for the
The Sun was usually timid but
4000 Essential English Words 4 – Answer Key
Unit 13
Reading Comprehension
Part A
Exercise 1
1. F
1. b
fell during the race.
2. a
2. T
3. a
3. F
4. a
nutritious for breakfast.
5. a
4. T
5. T
Exercise 2
6. T
1. autograph
2. nightmares
Part B
3. maximize
1. b
4. van
2. c
5. workout
3. b
6. irritable
4. a
7. horn
8. lag
9. warns
10. nutritious
Exercise 3
1. c
2. b
3. a
4. a
5. a
6. b
7. a
8. a
9. d
10. c
13
Alex has a nightmare that he
Alex wanted to eat something
4000 Essential English Words 4 – Answer Key
Unit 14
Reading Comprehension
Part A
Exercise 1
1. T
1. a
2. T
2. b
3. F
3. a
and flexible.
4. c
4. F
5. b
sigh.
The dough needed to be soft
The younger brother uttered a
5. T
Exercise 2
6. F
1. d
major problem.
2. a
3. b
Part B
4. b
1. b
5. d
2. b
3. b
Exercise 3
4. d
1. lump / brick
2. uttering / reconciled
3. shutters /sparkled
4. stale / flushed
5. crumbled / dough
6. sift / shattered
7. fist / flexible
8. mixture / sprinkle
9. expressed / slight
10. ruined / injured
14
A slight mistake now became a
4000 Essential English Words 4 – Answer Key
Unit 15
5. h
6. i
Exercise1
7. c
1. await / research
8. f
2. beloved / misery
9. d
3. variety / complained
10. g
4. confused / due
5. establish / climate
Reading Comprehension
6. Although / prior
Part A
7. furnace /entire
1. T
8. midst / mature
2. F
9. leash / measured
skin so that scientists could know
10. apply / buried
how she felt.
3. F
Wires were applied to Laika’s
Although Laika could not be
Exercise 2
buried, a memorial was established in
Part A
her honor.
1. a
4. T
2. d
5. F
3. f
a man- made object into space.
4. c
6. T
5. i
6. b
Part B
7. j
1. a
8. h
2. a
9. e
3. c
10. g
4. a
Part B
1. a
2. b
3. e
4. j
15
In a prior launch scientists sent
4000 Essential English Words 4 – Answer Key
Unit 16
5. g
6. c
Exercise 1
7. b
1. misfortune, negative
8. f
2. bruise, altogether
9. a
3. sake, per
10. e
4. pleaded, disobedient
5. source, glimpsed
Reading Comprehension
6. hoop, stitched
Part A
7. bound, custom
1. T
8. stern, ripped
2. T
9. thump, scraped
3. F
10. foresee, vehement
4. T
5. F
There were six girls per team.
Stephanie asked Gwen to try
Exercise 2
her best for the sake of the team.
Part A
6. T
1. i
2. c
Part B
3. f
1. b
4. b
2. d
5. h
3. b
6. j
4. b
7. a
8. e
9. d
10. g
Part B
1. d
2. i
3. h
4. j
16
4000 Essential English Words 4 – Answer Key
Unit 17
Reading Comprehension
Part A
Exercise 1
1. F
1. lid / convenient
camping with her family.
2. folded / shield
2. T
3. urban / exit
3. T
4. mighty / civilization
4. T
5. swayed / stormy
5. F
6. waded / reeds
second day.
7. flock / dew
6. T
8. poison / drastic
9. den / mushrooms
Part B
10. native / loomed
1. d
2. a
Exercise 2
3. c
1. poison
4. d
2. mushrooms
3. dew
4. native
5. shield
6. den
7. folded
8. flock
9. lid
10. exit
Exercise 3
1. c
2. b
3. d
4. b
5. d
17
Tracy invites Kara to go
The weather is sunny on the
4000 Essential English Words 4 – Answer Key
Unit 18
1. i
2. b
Exercise 1
3. e
Part A
4. g
1. b
5. a
2. c
6. f
3. a
7. c
4. c
8. j
5. d
9. d
10. h
Part B
1. a
Reading Comprehension
2. b
Part A
3. d
1. F
4. b
Lost Glove.
5. b
2. T
3. F
The title of the script was The
Peter declined Robby’s offer to
practice together.
Exercise 2
4. T
Part A
5. T
1. e
6. T
2. j
3. d
Part B
4. a
1. b
5. g
2. b
6. b
3. c
7. c
4. b
8. h
9. i
10. f
Part B
18
4000 Essential English Words 4 – Answer Key
Unit 19
10. h
Exercise 1
Part B
1. b
1. e
2. a
2. g
3. b
3. c
4. b
4. h
5. a
5. j
6. b
Exercise 2
7. d
1. atmosphere
8. i
2. stated
9. a
3. chapters
10. f
4. notified
5. tray
Reading Comprehension
6. afflicted
Part A
7. etc.
1. T
8. aisle
2. F
9. breakdown
read a book by his favorite author.
10. author
3. T
4. F
Isaac listened to music and
Isaac was still scared after the
Exercise 3
shaking stopped.
Part A
5. F
1. f
conditions in the atmosphere were
2. c
bad.
3. g
6. T
4. i
5. d
Part B
6. e
7. b
7. b
8. d
8. j
9. a
9. a
10. c
19
The pilot stated that the
4000 Essential English Words 4 – Answer Key
Unit 20
Reading Comprehension
Part A
Exercise 1
1. F
1. a
was rife with enemies.
2. a
2. F
3. d
Susie was sweeping the path.
4. b
3. T
5. b
4. T
5. F
The land near the King’s fort
When Clara and Susie met,
Clara commented to her father
Exercise 2
that he shouldn’t distrust people.
1. sole
6. T
2. pray
3. choked
Part B
4. ceased
1. d
5. mass
2. b
6. dent
3. a
7. distrust
4. b
8. rife
9. betrayed
10. cross
Exercise 3
1. blast / choke
2. fort / treachery
3. sweep / tuck
4.sole / lining
5. distrust / betray
6. founded / ceased
7. commented / civil
8. bracelet / dent
9. mass / cross
10. rife / pray
20
4000 Essential English Words 4 – Answer Key
Unit 21
10. g
Exercise 1
Part B
1. sum
1. e
2. vein
2. d
3. relate
3. b
4. chronicles
4. f
5. copper
5. i
6. millennium
6. a
7. background
7. h
8. venom
8. c
9. trustworthy
9. j
10. update
10. g
Exercise 2
Reading Comprehension
1. c
Part A
2. d
1. F
3. a
fellow employees were stealing.
4. a
2. T
5. a
3. F
A teller at a bank thought her
The venom was taken from a
poisonous snake.
Exercise 3
4. T
Part A
5. F
1. f
scratching their hands and arms.
2. i
6. T
3. j
4. e
Part B
5. b
1. d
6. a
2. b
7. h
3. c
8. c
4. d
9. d
21
Three of her coworkers were
4000 Essential English Words 4 – Answer Key
Unit 22
Reading Comprehension
Part A
Exercise 1
1. T
1. mocking, temper
2. F
2. scribes, unity
western areas' economy.
3. hitchhiked, cozy
3. T
4. charity, goods
4. F
5. heeded, neutral
throne, and the scribe stood in front
6. empire, commerce
of him.
7. victor, throne
5. F
8. reduced, pity
citizens of the western areas to starve.
9. persecuted, economy
6. T
10. depleted, condemned
Part B
Exercise 2
1. b
1. goods
2. c
2. depleted
3. d
3. charity
4. a
4. persecuted
5. victors
6. hitchhiked
7. mock
8. reduced
9. unity
10. empire
Exercise 3
1. c
2. b
3. d
4. a
5. c
22
The trees were important to the
The emperor sat upon his
The emperor condemned the
4000 Essential English Words 4 – Answer Key
Unit 23
5. c
6. i
Exercise 1
7. d
1. b
8. g
2. d
9. a
3. a
10. h
4. a
5. d
Reading Comprehension
6. c
Part A
7. d
1. T
8. d
2. F
9. c
the biggest factor in the death of
10. a
these huge creatures.
A tiny insect may have been
3. T
Exercise 2
4. F
Part A
from the vegetarians to the meat
1. g
eaters, died.
2. d
5. F
3. f
found the genetic material of
4. h
mosquitoes in fossils.
5. j
6. T
6. e
7. b
Part B
8. i
1. d
9. a
2. a
10. c
3. b
4. a
Part B
1. b
2. e
3. j
4. f
23
A vast majority of dinosaurs,
In addition, scientists have
4000 Essential English Words 4 – Answer Key
Unit 24
Reading Comprehension
Part A
Exercise 1
1. T
Part A
2. F
1. c
outside.
2. b
3. T
3. a
4. T
4. d
5. F
5. d
the truth any longer. He just wanted
The innkeeper staggered
He did not want to withhold
to foster happiness.
Part B
6. T
1. c
2. d
Part B
3. b
1. d
4. d
2. b
5. a
3. d
4. a
Exercise 2
1. cherish / moderation
2. growl / predator
3. sane / compassion
4. snatch / saucer
5. core / foster
6. cunning / grind
7. tumbled / dizzy
8. withhold / consent
9. tense / stumble
10. equilibrium / stagger
24
4000 Essential English Words 4 – Answer Key
Unit 25
8. zoology / nurture
9. rural / overhead
Exercise 1
10. principle / concrete
Part A
1. c
Reading Comprehension
2. a
Part A
3. d
1. F
4. c
Australia took twenty hours.
5. d
2. F
The journey on the aircraft to
Gilbert was a professor of
zoology.
Part B
3. F
1. c
4. T
2. c
5. T
3. b
6. T
4. b
5. b
Part B
1. b
Exercise 2
2. c
1. b
3. a
2. b
4. a
3. b
4. b
5. d
Exercise 3
1. hardy / traverse
2. celebrity / institute
3. migrate / aircraft
4. jealousy / esteemed
5. extinct / swamp
6. species / secluded
7. decisive / ethical
25
Gilbert was hardier than Eliza.
4000 Essential English Words 4 – Answer Key
Unit 26
2. g
3. d
Exercise 1
4. e
Part A
5. c
1. b
6. f
2. b
7. i
3. c
8. b
4. a
9. j
5. b
10. a
Part B
Reading Comprehension
1. c
Part A
2. d
1. T
3. c
2. F
4. b
colonel to extinguish the fire on the
5. a
plane.
3. F
It was impossible for the
The plane did not have any
Exercise 2
gasoline left after the crash.
Part A
4. T
1. e
5. F
2. h
the forest for three days.
3. i
6. F
4. a
and Mary through the trees and they
5. j
promptly arrived at a small town.
6. c
7. f
Part B
8. g
1. a
9. d
2. a
10. b
3. c
4. b
Part B
1. h
26
The couple searched for help in
The forest people led Wilbur
4000 Essential English Words 4 – Answer Key
Unit 27
3. b
4. d
Exercise 1
5. a
Part A
1. b
Reading Comprehension
2. c
Part A
3. a
1. F
4. c
the world’s oxygen supply.
5. b
2. T
Rainforests provide much of
3. T
Part B
4. F
1. a
mountaintops are mainly in African
2. b
and Central and South American
3. a
countries.
4. b
5. T
5. a
6. T
Exercise 2
Part B
1. wooded
1. a
2. distributed
2. a
3. federal
3. c
4. objective
4. d
5. exotic
6. oxygen
7. comprehensive
8. equator
9. comparative
10. beneficial
Exercise 3
1. d
2. a
27
These humid, wooded
4000 Essential English Words 4 – Answer Key
Unit 28
Reading Comprehension
Part A
Exercise 1
1. F
Part A
broke out in Athens.
1. d
2. T
2. d
3. T
3. a
4. F
4. a
that the plague was caused by the
5. c
gods.
5. T
Part B
6. T
1. c
2. a
Part B
3. c
1. b
4. b
2. c
5. d
3. d
4. b
Exercise 2
1. riot / shrine
2. paraphrased / defined
3. presently / expand
4. avail / solitude
5. fundamental / worsen
6. scribble / linger
7. horrifying / dreaded
8. incredulous / stark
9. summon / organism
10. random / plague
28
In 430 BCE, a horrifying plague
Thucydides was incredulous
4000 Essential English Words 4 – Answer Key
Unit 29
Reading Comprehension
Part A
Exercise 1
1. T
1. candidate / enhance
2. T
2. era / solar
3. F
3. pollute / incorporate
panels onto the outside that lie
4. corporate / confidential
parallel to each other.
5. phenomenon / mobile
4. F
6. automobile / parallel
kilometers across the Australian
7. transportation / ridiculed
territories.
8. guidelines / intervals
5. T
9. modify / territories
6. F
10. tournament / interact
intervals to charge their batteries.
Exercise 2
Part B
1. pollute
1. c
2. tournament
2. a
3. parallel
3. d
4. modify
4. a
5. ridiculed
6. era
7. interact
8. incorporate
9. automobiles
10. candidate
Exercise 3
1. d
2. c
3. b
4. b
5. a
29
The cars incorporate solar
These cars drive over 3,000
They must stop at certain
4000 Essential English Words 4 – Answer Key
Unit 30
5. f
6. b
Exercise 1
7. i
1. a
8. c
2. a
9. g
3. d
10.d
4. b
5. d
Reading Comprehension
6. d
Part A
7. a
1. F
8. c
organic ginseng and poultry.
9. b
2. T
10. d
3. T
4. F
Martin was a farmer who grew
Tom’s stance on discipline was
Exercise 2
too strong.
Part A
5. T
1. i
6. F
2.d
land’s boundary.
3. b
4. j
Part B
5. g
1. c
6. e
2. d
7.f
3. a
8. a
4. d
9. c
10. h
Part B
1. j
2. h
3. e
4. a
30
The brothers could not see the